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Fast Dds CVE-2023-39946

HIGH
Heap-based Buffer Overflow (CWE-122)
2023-08-11 security-advisories@github.com
7.5
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Heap buffer bounds checking
MITRE ATT&CK

1 technique across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.8% exploitation probability (EPSS)

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AnalysisAI

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-122. eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6, heap can be overflowed by providing a PID_PROPERTY_LIST parameter that contains a CDR string with length larger than the size of actual content. In eprosima::fastdds::dds::ParameterPropertyList_t::push_back_helper, memcpy is called to first copy the octet'ized length and then to copy the data into properties_.data. At the second memcpy, both data and size can be controlled by anyone that sends the CDR string to the discovery multicast port. This can remotely crash any Fast-DDS process. Versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6 contain a patch for this issue. Affected products include: Eprosima Fast Dds, Debian Debian Linux.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionNVD

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6, heap can be overflowed by providing a PID_PROPERTY_LIST parameter that contains a CDR string with length larger than the size of actual content. In eprosima::fastdds::dds::ParameterPropertyList_t::push_back_helper, memcpy is called to first copy the octet'ized length and then to copy the data into properties_.data. At the second memcpy, both data and size can be controlled by anyone that sends the CDR string to the discovery multicast port. This can remotely crash any Fast-DDS process. Versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6 contain a patch for this issue.

Threat Intelligence Overview

EPSS Score
0.8%
Top 48% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.8%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

A heap overflow occurs when a program writes data beyond the bounds of a buffer allocated in the heap memory region.

Affected Products (CPE)NVD

cpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*
cpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*
cpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*
cpe:2.3:a:eprosima:fast_dds:2.11.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
CVE-2025-65865 HIGH POC
7.5 Dec 23

Remote denial of service in eProsima Fast-DDS v3.3.0 allows unauthenticated network attackers to crash affected processe

CVE-2024-30259 HIGH POC
7.5 May 14

FastDDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). Ra

CVE-2024-30258 HIGH POC
7.5 May 14

FastDDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). Ra

CVE-2024-28231 HIGH POC
7.5 Mar 20

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Rate

CVE-2023-42459 HIGH POC
7.5 Oct 16

Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). R

CVE-2024-30916 HIGH POC
7.1 Apr 11

An issue was discovered in eProsima FastDDS v.2.14.0 and before, allows a local attacker to cause a denial of service (D

CVE-2025-67108 CRITICAL
10.0 Dec 23

Improper validation of permissions/ticket revocation in eProsima Fast-DDS 3.3.0 allows revoked or no-longer-valid securi

CVE-2025-62799 CRITICAL
9.8 Feb 03

Fast DDS (eProsima) has a heap buffer overflow in its C++ DDS implementation that allows remote attackers to execute cod

CVE-2024-30917 MEDIUM POC
5.5 Apr 11

An issue was discovered in eProsima FastDDS v.2.14.0 and before, allows a local attacker to cause a denial of service (D

CVE-2026-22590 CRITICAL
9.1 Sep 09

Remote heap information disclosure in eProsima Fast DDS lets unauthenticated attackers leak adjacent heap memory by send

CVE-2025-62600 HIGH
8.6 Feb 03

Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group ).

CVE-2025-62599 HIGH
8.6 Feb 03

Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group ).

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